What is the shape-memory plastic used for? A. To protect the screen from cracking. B. To help the wavelength of ultraviolet light strike the pixels. C. To change or hold the shape of the surface of the screen. D. To minimize the noises produced by frequencies. ...
Germicidal ultraviolet disinfection is rapid, low-maintenance, and does not use chemicals or produce byproducts. To achieve proper disinfection of water, air, or surfaces, each medium must be exposed to UV-C light (at the wavelength of 254 nanometers) for an appropriate amount of time, dependi...
Theconductancecan vary depending on the current or voltage applied to a control electrode or on the intensity of irradiation by infrared (IR), visible light, ultraviolet or X-rays. The specific properties of a semiconductor depend on the impurities -- known as dopants -- added to it. How do...
What is the temperature of Alpha Centauri? What are the current celestial coordinates of the Sun? What is the absolute magnitude of Rigel? What is the sun's mass? How many yards in a astronomical unit? What is ultraviolet astronomy used for?
I can't remember whose idea it was for us to meet again.我不记得让我们再次相见是谁的主意。Mr Liu wants to talk to the students whose homework hasn't been handed in.刘老师要跟那些没交家庭作业的学生谈话。【what】What happened next?后来发生了什么事?What is this used for?这做...
UVC led refers to the way of emitting UVC. For example, mercury lamps have been used in traditional ultraviolet lamps, and mercury is very dangerous. Mercury lamps have been completely banned after Minamata convention. As a new ultraviolet sterilization method, UVC LED is the only reliable altern...
In fluorescent tubes used for lighting, "ultraviolet radiation with a wavelength of 254 nm is produced along with the blue light that is emitted when an electric current is passed through mercury vapor," according to theUniversity of Nebraska. "This ultraviolet radiation is invisible but contains ...
aWe provide interpretation for changes of ultraviolet absorption and fluorescent spectra in the section 3.1 and 3.2 of the manuscript, and other interpretation for each of our results are given in the corresponding experimental results 我们为紫外吸收和萤光光谱的变动提供解释在第3.1部分和第3.2部分原稿,并...
In the chemical reactor there's a vacuum very close to that of interstellar space. And the temperature is minus 200° Celsius.在化学反应堆中有一个非常接近星际空间的真空空间。温度是- 200摄氏度。We made the ice, we can see a bit here, a sort of growth on the edge of the window. The ...
To produce smaller transistors, the wavelength of ultraviolet light needs to be reduced so that the lines created on the photoresist become finer. In the early days of lithography, ultraviolet light with a wavelength of 436nm (known as g-line) was used, which could produce transistors with dim...